The design of hydraulic valve block mostly belongs to non-standard design, which needs targeted design according to different working conditions and use requirements. The design of valve block is roughly divided into the following steps: material selection, processing and heat treatment, deburring and cleaning, surface anti rust treatment and test.

The verticality tolerance between 6 faces of valve block is 0.05mm; The tolerance of parallelism of relative surface is o.03mm; The flatness tolerance of each surface is 0.02mm; The perpendicularity tolerance between the thread and its mating surface is 0.05mm; The allowable deviation between all holes and the verticality of the end face is 0.05mm.

All the screw holes on the valve block shall have machining accuracy requirements, generally 7h. The machining accuracy of the mounting hole of the threaded Manifold shall meet the requirements of the product sample.

Material selection: different materials determine different pressure levels. First of all, reasonable material selection should be made according to the use pressure. Generally speaking, the following principles should be followed: when the working pressure P < 6.3MPa, cast iron HT20-40 can be used for hydraulic valve block.

The structural form of the hydraulic valve block is mainly based on the structural form of the pump device. In the process of operation, its installation position and refrigeration mode are distinguished.